Mobile navigation bar and menu
Key Takeaway
To change mobile navigation, edit the Lightning app's navigation items, and put the four most important items at the top so they appear in the navigation bar.
The Salesforce mobile app gives users a navigation bar and a navigation menu, and both follow the Lightning app the user is in. The mobile menu mirrors that app's desktop navigation tabs, so you shape mobile navigation mainly by configuring the Lightning app itself.
Navigation bar and navigation menu
The navigation bar sits at the bottom of the screen and keeps key items within easy thumb reach. Tapping Menu opens the navigation menu, which lists all the objects, apps, and items available to the user.